EXHIBIT 99.4

                            1998 Third Quarter Report
                        Limited Partner Quarterly Update


Presented for your review is the 1998 Third Quarter  Report for the Potomac
Hotel Limited Partnership (the "Partnership"). A discussion of the Partnership's
performance and hotel  operations is included in the attached Form 10-Q, Item 2,
Management's  Discussion  and  Analysis of  Financial  Condition  and Results of
Operations.  You are  encouraged to review this report in its  entirety.  If you
have any further  questions  regarding  your  investment,  please  contact  Host
Marriott Partnership Investor Relations at (301) 380-2070.

HOST MARRIOTT CORPORATION'S CONVERSION TO A REAL ESTATE INVESTMENT TRUST

     As publicly  announced  in April 1998,  Host  Marriott  Corporation  ("Host
Marriott"),  the  General  Partner  of the  Partnership,  has  adopted a plan to
restructure  its  business  operations  so that it will qualify as a real estate
investment  trust ("REIT") for federal income tax purposes.  As part of the REIT
conversion,  Host Marriott proposes to merge into HMC Merger  Corporation (to be
renamed "Host Marriott Corporation"),  a Maryland corporation ("Host REIT"), and
thereafter continue and expand its full-service hotel ownership  business.  Host
REIT will operate through Host Marriott,  L.P., a Delaware  limited  partnership
(the  "Operating  Partnership"),  of which  Host REIT  will be the sole  general
partner.  This  is  commonly  called  an  "UPREIT"  structure  and it is used to
facilitate tax-deferred acquisitions of properties.

     In previous  correspondence,  you were  notified that you would be asked to
vote on a proposed transaction involving the Merger of this Partnership with the
Operating  Partnership.  The  Prospectus/Consent  Solicitation Statement and the
Partnership's  Supplement  which contain detailed  information  relating to this
proposal were mailed to all Limited Partners of record as of September 18, 1998.
This is the date set by the General  Partner as the record date for  determining
Limited  Partners  entitled to vote on the Merger and the related  amendments to
the partnership agreement. The Prospectus/Consent Solicitation Statement and the
Partnership's  Supplement  should be reviewed as you make your decision to vote.
You also  received,  among other  things,  a list of  Questions  and Answers and
telephone  numbers for assistance.  We strongly  encourage  Limited  Partners to
consult with their own financial and tax advisors when making their  decision on
how to vote and which option to choose.

     It is important  that your  Partnership  Units be voted,  regardless of the
number of Partnership Units you hold. The solicitation period ends at 5:00 p.m.,
Eastern  time,  on  December  12,  1998,  unless  extended.  If you have not yet
received  the  Prospectus/Consent  Solicitation  Statement  or if  you  or  your
advisors have any questions regarding the Merger, please contact the Information
Agent at 1-800-733-8481 extension 445.



ESTIMATED 1998 TAX INFORMATION

     If  the  Partnership  votes  to  approve  the  Merger  and  the  Merger  is
consummated,  the taxable  income is estimated to be $6,400 per limited  partner
unit for the year ending December 31, 1998. If the Partnership  does not approve
the Merger,  the taxable  income is estimated  to be $5,300 per limited  partner
unit for 1998.

     The 1998 tax information,  used for preparing your Federal and state income
tax  returns,   will  be  mailed  no  later  than  March  15,  1999.  To  ensure
confidentiality,  we regret that we are unable to furnish  your tax  information
over  the  telephone.  Unless  otherwise  instructed,  we  will  mail  your  tax
information  to your address as it appears on this report.  Therefore,  to avoid
delays in delivery of this important information,  please notify the Partnership
in writing of any address changes by January 31, 1999.

AMOUNTS PAID TO THE GENERAL  PARTNER AND MARRIOTT  INTERNATIONAL,  INC. AND
AFFILIATES

     The chart  below  summarizes  amounts  paid (in  thousands)  to the General
Partner and Marriott International, Inc. and affiliates for the thirty-six weeks
ended September 11, 1998 (unaudited):
  
General Partner and Affiliates
  
  Interest and principal paid on Bank Guaranty loan..................$     2,212
  Interest and principal paid on Raleigh acquisition loan............      2,179
  Interest and principal paid on FF&E loans..........................      1,749
  Interest and principal paid on Tampa acquisition loan..............      1,713
  Administrative expenses reimbursed.................................        177

                                                                     $     8,030

  Marriott International, Inc. and Affiliates:

  Chain Services and Marriott Rewards Program costs reimbursed.......$     5,423
  Base management fees paid..........................................      2,418
  Deferred base management fees paid.................................      1,545
  Incentive management fees paid.....................................        679
  Interest and principal paid on FF&E loan...........................         58

                                                                    $     10,123